Record number :
775489
Title of article :
The mineralisation of fresh and humified soil organic matter by the soil microbial biomass
Author/Authors :
& P.C. Brookes، نويسنده , , M.L. Cayuela، نويسنده , , G. Bragato and M. Contin ، نويسنده , , M. De Nobili، نويسنده , , S.J. Kemmitt، نويسنده , , C. Mondini، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Pages :
7
From page :
716
To page :
722
Abstract :
Soil organic matter comprises all dead plant and animal residues, from the most recent inputs to the most intensively humified. We have found that traces of fresh substrates at μg g−1 soil concentrations (termed ‘trigger molecules’) activate the biomass to expend more energy than is contained in the original ‘trigger molecules’. In contrast, we suggest that the rate limiting step in soil organic matter mineralisation is independent of microbial activity, but is governed by abiological processes (which we term the Regulatory Gate theory). These two findings have important implications for our understanding of carbon mineralisation in soil, a fundamental process in the sequestration of soil organic matter.
Journal title :
Waste Management
Link To Document :